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CANADA 
DEPARTMENT OF AGRICULTURE 
SCIENCE SERVICE - DIVISION OF FOREST BIOLOGY 
FOREST LEPIDOPTERA 
OF SOUTHERN ONTARIO 
AND THEIR PARASITES 
RECEIVED AND REARED AT THE OTTAWA FOREST INSECT SURVEY LABORATORY FROM 1937 TO 1948 
BY 
HENRI /RAIZENNE 
OTTAWA, MARCH 1952 
